Open up a compilation of girls cumming of at least 40 minutes and tie yourself to a chair with your legs spread open. While the video is running try to ride the edge for as long as you can. If you lose the edge, make a tally mark somewhere and get back on as quick as you can. If you go over the edge, ruin it.
Once the compilation is over, snap a rubber band on your clit with a rubber band once for each tally mark. Finally rub yourself to an orgasm before untying yourself.
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